[5.2] Test | Fixed some Azure managed identity authentication unit test failures

[arellegue]

Backport for Fixed some Azure managed identity authentication unit test failures PR #2652

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.67%. Comparing base (39d6664) to head (a7cee40).
Report is 3 commits behind head on release/5.2.

Additional details and impacted files

@@               Coverage Diff               @@
##           release/5.2    #2735      +/-   ##
===============================================
+ Coverage        72.64%   72.67%   +0.02%     
===============================================
  Files              310      310              
  Lines            61881    61881              
===============================================
+ Hits             44955    44970      +15     
+ Misses           16926    16911      -15     

Flag	Coverage Δ
addons	92.88% <ø> (ø)
netcore	76.86% <ø> (+0.02%)	⬆️
netfx	70.22% <ø> (+<0.01%)	⬆️

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